gh-35384: make dist: Update git remotes

    
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### 📚 Description

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The source tarballs made by `make dist` contain a git repository.
We update the remotes.
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As discussed in https://groups.google.com/g/sage-devel/c/TsHnvmkdrR8
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- [x] I have linked a relevant issue or discussion.
- [ ] I have created tests covering the changes.
- [ ] I have updated the documentation accordingly.

### ⌛ Dependencies

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URL: #35384
Reported by: Matthias Köppe
Reviewer(s): John H. Palmieri

build/bin/sage-clone-source

@@ -31,11 +31,13 @@ CONFBALL="$SRC/upstream/configure-$CONFVERSION.tar.gz"
 rm -rf "$DST"
 mkdir -p "$DST"
 
-git clone --origin trac "$SRC" "$DST"
+git clone --origin upstream "$SRC" "$DST"
 
 cd "$DST"
-git remote set-url trac "$SAGE_REPO_ANONYMOUS"
-git remote set-url --push trac "$SAGE_REPO_AUTHENTICATED"
+git remote set-url upstream "$SAGE_REPO_ANONYMOUS"
+git remote set-url --push upstream "do not push to upstream"
+git remote add trac https://github.com/sagemath/sagetrac-mirror.git
+git remote set-url --push trac "do not push to trac"
 
 # Save space
 git gc --aggressive --prune=now

src/bin/sage-env

@@ -305,11 +305,11 @@ if [ -n "$SAGE_LOCAL" ]; then
 fi
 
 if [ -z "$SAGE_REPO_ANONYMOUS" ]; then
-    SAGE_REPO_ANONYMOUS="https://github.com/sagemath/sagetrac-mirror.git"
+    SAGE_REPO_ANONYMOUS="https://github.com/sagemath/sage.git"
     export SAGE_REPO_ANONYMOUS
 fi
 if [ -z "$SAGE_REPO_AUTHENTICATED" ]; then
-        SAGE_REPO_AUTHENTICATED="ssh://git@trac.sagemath.org:2222/sage.git"
+        SAGE_REPO_AUTHENTICATED="https://github.com/sagemath/sage.git"
         export SAGE_REPO_AUTHENTICATED
 fi
 

src/sage/cpython/__init__.py

@@ -40,7 +40,7 @@ def connect(*args, **kwargs):
             if fix_for_ticket_30157():
                 raise RuntimeError(
                     'patch for Github issue #30157 failed; please report this '
-                    'bug to https://trac.sagemath.org')
+                    'bug to https://github.com/sagemath/sage/issues')
 
             # Undo the monkey-patch
             try:

src/sage/dynamics/arithmetic_dynamics/projective_ds.py

@@ -2336,7 +2336,7 @@ def canonical_height(self, P, **kwds):
             # is always nonnegative, so if this value is within -err of 0, return 0.
             if h < 0:
                 assert h > -err, "A negative height less than -error_bound was computed. " + \
-                 "This should be impossible, please report bug on trac.sagemath.org."
+                 "This should be impossible, please report bug on https://github.com/sagemath/sage/issues"
                     # This should be impossible. The error bound for Wells' is rigorous
                     # and the actual height is always >= 0. If we see something less than -err,
                     # something has g one very wrong.

src/sage/repl/interpreter.py

@@ -696,14 +696,14 @@ def __init__(self, app):
             <sage.repl.interpreter.SageCrashHandler object at 0x...>
             sage: sorted(sch.info.items())
             [('app_name', 'Sage'),
-             ('bug_tracker', 'http://trac.sagemath.org'),
+             ('bug_tracker', 'https://github.com/sagemath/sage/issues'),
              ('contact_email', '[email protected]'),
              ('contact_name', 'sage-support'),
              ('crash_report_fname', 'Crash_report_Sage.txt')]
         """
         contact_name = 'sage-support'
         contact_email = '[email protected]'
-        bug_tracker = 'http://trac.sagemath.org'
+        bug_tracker = 'https://github.com/sagemath/sage/issues'
         CrashHandler.__init__(self,
             app, contact_name, contact_email, bug_tracker, show_crash_traceback=True)
         self.crash_report_fname = 'Sage_crash_report.txt'